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WO1992008301A1 - Transmission privee de donnees dans un systeme de communication multimode - Google Patents

Transmission privee de donnees dans un systeme de communication multimode Download PDF

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Publication number
WO1992008301A1
WO1992008301A1 PCT/US1991/008002 US9108002W WO9208301A1 WO 1992008301 A1 WO1992008301 A1 WO 1992008301A1 US 9108002 W US9108002 W US 9108002W WO 9208301 A1 WO9208301 A1 WO 9208301A1
Authority
WO
WIPO (PCT)
Prior art keywords
communication system
data transmission
data
trunking
cellular communication
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US1991/008002
Other languages
English (en)
Inventor
Richard Alan Comroe
Gary William Grube
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Motorola Solutions Inc
Original Assignee
Motorola Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Motorola Inc filed Critical Motorola Inc
Publication of WO1992008301A1 publication Critical patent/WO1992008301A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04—Large scale networks; Deep hierarchical networks
    • H04W84/08—Trunked mobile radio systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/02—Inter-networking arrangements

Definitions

  • This invention relates generally to communication systems and in particular to a method that allows a trunking communication system to utilize a cellular communication system to privately transmit data.
  • Trunking communication systems typically comprise a communication channel controller, a limited number of repeaters that transceive information via communication channels, and a plurality of communication units which may be mobile vehicle radios and/or portable radios, and may also include data transmission features. Of the communication channels, one is typically chosen to be a control channel.
  • the control channel typically transceives operational information between the communication channel controller and the data transmission features of the plurality of communication units such that, for example, the plurality of communication units can access the communication channels.
  • the trunking system has a relatively large geographic coverage area, depending on the environment that the trunking communication system is located, for example, the coverage area may be approximately thirty-five miles in diameter.
  • a cellular communication system typically comprises a mobile telephone switching office (MTSO) , a plurality of cells, a limited number of communication channels, and a plurality of communication units which may be cellular telephones.
  • Each of the plurality of cells comprises some of the limited number of communication channels, wherein one of the communication channels is designated as the control channel for that cell.
  • the control channel transceives operational information between the plurality of communication units within the cell and the MTSO such that the communication units can place telephone calls via a phone system.
  • the coverage area of each cell is relatively small in comparison with that of a typical trunking communication system. For example, a typical cell coverage area is approximately two miles in diameter. Because an individual cell coverage area is relatively small, the communication channels maybe be reused, at least once, within a geographic region of approximately the same size as a trunking communication system.
  • data may be transmitted, on the control channel, from the communication channel controller to the plurality of communication units.
  • Such data transmissions cause data traffic on the control channel and in many instances reduce the overall efficiency of the trunking communication system.
  • each communication unit must be addressed individually due to unique features of the communication unit. (Unique features of a communication unit may include priority calling, secure calling, private calling, etc.)
  • Dynamic regrouping for large groups -of fifty communication units or more- typically requires a substantial amount of time -at least several seconds- to regroup the communication units.
  • each of the plurality of communication units may individually transmit data to the communication channel controller.
  • Data transmissions from a communication unit to the communication channel controller is also transmitted on the control channel of the trunking communication system which further adds to the data traffic.
  • Such point to point data transmissions in the trunking communication system are relatively inefficient due to the limited number of communication channels used as control channels.
  • Cellular communication systems are relatively efficient at processing point to point data transmissions due to the relatively large number of control channels; at least one for each cell of the cellular communication system where data transmissions in the cellular communication system include, for example, placing telephone calls.
  • a method for a data transmission unit to communicate data with a data target comprises the steps of receiving a data transmission request, which may be internally generated within the data transmission unit or received from a communication channel controller. After receiving the data transmission request, the data transmission unit transfers its affiliation from the trunking communication system to the cellular communication system. Once affiliated with the cellular communication system, the data transmission unit transmits the requested data information to a designated data target via the cellular communication system.
  • FIG. 1 illustrates a cellular communication system and a trunking communication system each having substantially the same coverage areas in accordance with the present invention.
  • FIG. 2 illustrates a logic diagram that may be used to implement the present invention.
  • FIG. 1 illustrates a trunking communication system 101 and a cellular communication system 100 operably coupled together in accordance with the present invention.
  • the cellular communication system comprises a mobile telephone switching office (MTSO) 109 and a plurality of cells 103 (3 shown) , where each cell is operably coupled to the MTSO 109 and has a specific coverage area 107.
  • Each cell comprises a limited number of communication channels 105 which may be carrier frequencies, frequency pairs, and/or time division multiplexing (TDM) slots, wherein one of the communication channels is designated as a control channel.
  • TDM time division multiplexing
  • the summation of the coverage area of each cell 107 comprises the coverage area of the cellular communication system 108.
  • the cellular communication system also comprises a plurality of communication units 104 (2 shown) where the communication units are equipped with one receiver and one transmitter that has adequate bandwidth to operate in both the trunking communication system and the cellular communication system.
  • the trunking communication system 101 comprises a communication channel controller 110, a plurality of communication channels 111, wherein one of the communication channels is designated as a control channel 112, and a plurality of communication units 104.
  • the coverage area of the trunking communication system 113 substantially overlaps and may be approximately equal to, the coverage area of the cellular communication system 108. However, for illustrative purposes the coverage areas are shown separately.
  • the trunking communication system 101 is operably coupled to the cellular communication system by one of three methods .
  • the first and most convenient method is to couple the systems together through a phone line 114 or a plurality of phone lines to a phone system 102.
  • This coupling method allows the trunking communication system to transfer messages to the cellular communication system by placing telephone calls to the cellular communication system via the telephone system 102.
  • An alternative method is to directly connect the communication channel controller 110 to the MTSO 109 by a direct connection 116.
  • the communication channel controller 110 may be directly coupled into the communication channel links 117 of the cellular communication system by a coupling link 115 that is similar to a telephone link.
  • data transmission units are affiliated with the trunking communication system by monitoring the trunking communication system's control channel. When a particular data transmission unit is prompted to transmit data, it transfers its affiliation from the trunking communication system to the cellular communication system. Once the particular data transmission unit is affiliated with the cellular communication system, the requested data is transmitted via the cellular communication system. The trunking communication system, through a phone connection to the cellular communication system, receives the requested data information and deciphers it to determine the data target. The requested data information is then routed, by the communication channel controller, to the data target. Once the particular data transmission unit has transmitted the requested data information, it transfers its affiliation back to the trunking communication system.
  • a data transmission unit may be a communication unit that acts as a trunking communication radio that transceives both voice and data while affiliated with the trunking communication system and acts as a cellular telephone that transceives both voice and data while affiliated with the cellular communication system.
  • FIG. 2 illustrates a logic diagram of the present invention.
  • a data transmission unit is prompted with a data transmission request.
  • the prompting of the data transmission unit may be done by a user of the data transmission unit wherein the user desires to transmit data either to another data transmission unit or to the communication channel controller.
  • the prompting may also be initiated by the communication channel controller, wherein the communication channel controller requests the data transmission unit to transmit data information or desires to send data to the data transmission unit. If the data transmission unit did not receive the data transmission request 201, either due to the data transmission being off or out of range, the process ends.
  • the data transmission unit transfers its affiliation from the trunking communication system to the cellular communication system 202.
  • Transferring affiliation from the trunking communication system to the cellular communication system may be accomplished by changing a local oscillator of a receiver and a transmitter of the data transmission unit such that the data transmission unit is operable in the cellular transmit and receive areas as opposed to the trunking transmit and receive bands.
  • Transferring affiliation back to the trunking communication system is accomplished in a similar manner except that the local oscillator is adjusted such that the data transmission unit is operable in the trunking transmit and receive bands.
  • the communication channel controller via the interconnection to the cellular communication system, transmits the remainder of the data transmission request 203.
  • the remainder of the data transmission request may be a telephone number that, in addition to identifying the particular data transmission unit, contains data or a request for specific data transmissions. For example, three digits of the telephone number may indicate a talk group assignment for the data transmission unit, such that the data transmission unit automatically changes its talk group affiliation when the telephone number is detected. Another example may be that the telephone number requests the data transmission unit to transmit data relating to its on air time.
  • the data transmission unit After receiving the remainder of the data transmission request, the data transmission unit performs the requested operation 204. If the requested operation is to transmit data to a data target, the data transmission unit places a telephone call, via the cellular communication system, to the trunking communication system, wherein the requested data is contained within the digits of the telephone number.
  • the trunking communication system deciphers the transmitted data and routes at least a representation of the data to the data target.
  • a data target may be another data transmission unit, the communication channel controller, a console of the trunking communication system, or a particular data acquisition device such as a data recorder that may be used to record on air time to determine charges, etc.
  • the data transmission unit If the data transmission unit prompted the data transmission request 200, it transfers its affiliation to the cellular communication system. Once affiliated with the cellular communication system, the data transmission unit places a telephone call to the trunking communication system via the cellular communication system 204. The communication channel controller receives and deciphers the telephone call to extract the data and the data target, if one is included. If the data was intended for a data target. the communication channel controller routes the data to the data target. Once the data transmission unit has transmitted the data, it transfers its affiliation back to the cellular communication system 205.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

On décrit un procédé servant à transférer la transmission privée de données d'un système de communication interurbain (101) à un système de communication cellulaire (100) dans une zone géographique qui contient un système de communication interurbain (101) et un système de communication cellulaire (100) et où les zones de couverture (108, 113) de chaque système se chevauchent sensiblement. Lorsqu'une unité de transmission de données (104) est sollicitée pour transmettre des données, elle transfère son affiliation du système de communication interurbain (101) au système de communication cellulaire (100). Une fois affiliée au système de communication cellulaire (100), l'unité de transmission de données (104) transfère les données par l'intermédiaire du système de communication cellulaire (100). Le système de communication interurbain (101) détecte les données requises et achemine les données requises à la cible de données appropriée (104, 110). Une fois que l'unité de transmission de données (104) a transmis les données requises, elle retransfère son affiliation au système de communication interurbain (101).
PCT/US1991/008002 1990-11-05 1991-10-30 Transmission privee de donnees dans un systeme de communication multimode Ceased WO1992008301A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/608,879 US5239674A (en) 1990-11-05 1990-11-05 Method for transferring private data transmissions from a trunking communication system to a cellular communication
US608,879 1990-11-05

Publications (1)

Publication Number Publication Date
WO1992008301A1 true WO1992008301A1 (fr) 1992-05-14

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1991/008002 Ceased WO1992008301A1 (fr) 1990-11-05 1991-10-30 Transmission privee de donnees dans un systeme de communication multimode

Country Status (2)

Country Link
US (1) US5239674A (fr)
WO (1) WO1992008301A1 (fr)

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US7397363B2 (en) 1993-06-08 2008-07-08 Raymond Anthony Joao Control and/or monitoring apparatus and method
US5917405A (en) 1993-06-08 1999-06-29 Joao; Raymond Anthony Control apparatus and methods for vehicles
US6542077B2 (en) 1993-06-08 2003-04-01 Raymond Anthony Joao Monitoring apparatus for a vehicle and/or a premises
US5504804A (en) * 1994-01-19 1996-04-02 Telefonaktiebolaget Lm Ericsson Providing individual subscriber services in a cellular mobile communications network
US5594782A (en) * 1994-02-24 1997-01-14 Gte Mobile Communications Service Corporation Multiple mode personal wireless communications system
BR9506894B1 (pt) * 1994-02-24 2010-08-10 método de operação de um sistema de telecomunicações celular, método de ativação de uma estação móvel celular e estação móvel em um sistema de telecomunicações rádio-celular.
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US6058307A (en) 1995-11-30 2000-05-02 Amsc Subsidiary Corporation Priority and preemption service system for satellite related communication using central controller
US7253731B2 (en) 2001-01-23 2007-08-07 Raymond Anthony Joao Apparatus and method for providing shipment information
US6587046B2 (en) 1996-03-27 2003-07-01 Raymond Anthony Joao Monitoring apparatus and method
US10011247B2 (en) 1996-03-27 2018-07-03 Gtj Ventures, Llc Control, monitoring and/or security apparatus and method
US10152876B2 (en) 1996-03-27 2018-12-11 Gtj Ventures, Llc Control, monitoring, and/or security apparatus and method
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KR100244191B1 (ko) * 1997-07-03 2000-02-01 윤종용 개인 휴대 통신 기지국 관리 시스템의 다중 접속 운용 장치및 방법
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